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RS225-4 8" Reference Woofer 4 Ohm
Quick Overview
The Dayton Audio Reference Series sets a new standard of value in high-performance loudspeaker drivers. Woofer features a black anodized cone, heavy-duty 6-hole cast frame, low-loss rubber surround, solid aluminum phase plug, rubber magnet boot, and gold spring terminals.Product Highlights
- 4 ohm impedance is perfect for series pairs in MTMs and center channel speakers
- Excellent car audio midrange/midbass
- High-end low-distortion motor with two shorting paths to reduce inductance
Product Manuals / Spec Sheets / Downloads
Dayton Audio RS225-4 Specification SheetDayton Audio RS225-4 Data Files
Buying Options
The Dayton Audio Reference Series sets a new standard of value in high-performance loudspeaker drivers. Utilizing a low-distortion motor system with two short-circuit paths and a rigid aluminum cone, the Reference Series can outperform drivers that cost several times the price. Their low-distortion characteristics and high excursion capabilities provide exceptional clarity, detail, and dynamics. Woofer features a black anodized cone, heavy-duty 6-hole cast frame, low-loss rubber surround, solid aluminum phase plug, rubber magnet boot, and gold spring terminals.
OPTIMUM CABINET SIZE *
Sealed Volume 0.5 ft.³
Sealed F3 70 Hz
Vented Volume 1.62 ft.³
Vented F3 36 Hz
* Enclosure volume/F3s based on BassBox "optimum" calculations
| Speaker Series | Reference Series |
| Model Number | RS225-4 |
| Color | Black |
| Unit of Measure | Each |
| UPC | 844632054259 |
| Warranty - Parts | 5 Years |
| Warranty - Labor | 5 Years |
| Product Shipping Weight (lbs.) | 5.95 |
| Speaker Type | Woofer |
| Nominal Diameter | 8" |
| Power Handling (RMS) | 80 watts |
| Power Handling (max) | 160 watts |
| Continuous Program Power | -- |
| Impedance | 4 ohms |
| Sensitivity | 91 dB @ 2.83V/1m |
| Frequency Response |
35 - 2 300 Hz |
| Voice Coil Diameter | 38 mm |
| Magnet Weight | -- |
| DC Resistance (Re) | 3.2 ohms |
| Voice Coil Inductance (Le) | 0.49 mH @ 1 kHz |
| Resonant Frequency (Fs) | 33 Hz |
| Mechanical Q (Qms) | 2.02 |
| Electromagnetic Q (Qes) | 0.52 |
| Total Q (Qts) | 0.41 |
| Diaphragm Mass Inc. Airload (Mms) | 32.2g |
| Moving Mass Of Diaphragm (Mmd) | -- |
| Mechanical Compliance of Suspension (Cms) | 0.72 mm/N |
| Surface Area Of Cone (Sd) | 213.8 cm² |
| Volume of Displacement (Vd) | 128.2 cm³ |
| BL Product (BL) | 6.38 Tm |
| Compliance Equivalent Volume (Vas) | 46.4 liters |
| Maximum Linear Excursion (Xmax) | 6.0 mm |
| Drivers Mechanical Losses (Rms) | -- |
| Cone / Diaphragm Material | Black Anodized Aluminum Cone |
| Entry / Exit Diameter | -- |
| Surround Material | Rubber |
| Voice Coil Wire Material | Copper |
| Voice Coil Former | Aluminum |
| Basket/Frame Material | Cast Aluminum |
| Magnet Material | Ferrite |
| Overall Outside Diameter | 223 mm |
| Overall Depth | 92 mm |
| Baffle Cutout Diameter | 184 mm |
| # Mounting Holes | 6 |
| Mounting Hole Diameter | -- |
| Bolt Circle Diameter | -- |
| Product Weight | -- |